package com.ECUT.javaSE.day2;//package上方不能有代码


public class practice6 {
    public static void main(String[] args) {
        //实现矩阵
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= 5; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
        System.out.println("*********************************************");
        //实现倒三角
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= 5 - i + 1; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
        System.out.println("*********************************************");
        //实现正三角
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }
        System.out.println("*********************************************");
        //实现等腰三角形
        for (int i = 1; i <= 4; i++) {
            for (int j = 1; j <= 4 - i; j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }

        //实现倒等腰三角形
        for (int i = 1; i <= 3; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= 2 * (3 - i) + 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}
